Glue

Did some bug fixing. Probably will make it release by next version, when I finally make sure that the mod is not really buggy.

* Bug fixed: Now the block will make sound when you step on it

* Bug fixed: Right clicking the glue will decrease the durability now

* Bug fixed: Now hands cannot break the glued slabs

* Bug fixed: Now empty bottles are returned when the glue is used

* Bug fixed: Wrong version in mcmod.info